三级的英文：
third class

参考例句：
  • The tertiary structure refers to the way the protein is bent and folded back on itself in space.
    三级结构指的是蛋白质自身的弯曲和折叠的方式。
  • As dorian hurried up its three rickety steps, the heavy odour of opium met him.
    道林快步走上那三级不住晃动的梯级时，闻到了浓重的鸦片烟味。
  • There will be a gentle west breeze coming up.
    将吹起三级西风
  • Third class of university degree
    大学的三级荣誉学位
  • Biological tertiary treatment
    三级生物处理
  • tertiary treatment of sewage
    污水三级处理
  • Effectiveness of the Minuteman II Stage III Refurbishment Program
    民兵II三级整修计划的有效性
  • The weatherman says there 's a gentle breeze tomorrow.
    天气预报说明天有三级风
  • "Egg is graded into classes a , b , and c . "
    鸡蛋被分为甲、乙、丙三级。
  • Get a third in biology at Durham
    获达勒姆大学生物系三级荣誉学位.
third是什么意思：
num. 第三，三分之一
adj. 第三的；三分之一的
  • One third of the population are townsmen and two thirds countrymen.
    三分之一的人口是住在城里，三分之二住在乡下。
  • Passing of the Third Floor Back
    四楼尽头的信道
  • The third coordinate is elevation.
    第三项坐标是高程。
  • Will Spurs be relegated to the third division?
    斯珀尔斯队会降为丙级队吗?
  • Third, have faith in your job.
    第三，要对你的工作有信心。
class是什么意思：
n. 班级；阶级；种类
v. 分类；把…分等级
adj. 很好的
  • It is a step class.
    这是踏板操训练班。
  • The class dismissed.
    下课了。
  • The class teacher sectioned the class for dialogues.
    老师把班级分组进行对话练习。
  • The class teacher dismissed the class on time.
    教师按时下课。
  • A second - class letter is slower than a first - class.
    二类信比一类信件慢。

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